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Pitch-angle diffusion of radiation belt electrons within the plasmasphere.Study of the formation of the quiet-time electron slot, which divides the radiation belt electrons into an inner and an outer zone. The pitch-angle diffusion of radiation belt electrons resulting from resonant interactions with the observed plasmaspheric whistler-mode wave band is quantitatively investigated. The effects of wave propagation obliquely to the geomagnetic field direction with the resulting diffusion at all cyclotron-harmonic resonances and the Landau resonance are evaluated along with the effects of interactions occuring at all geomagnetic latitudes. The results obtained account for the long-term stability of the inner radiation zone, the location of its outer edge as a function of electron energy, and the removal of electrons to levels near zero throughout the slot. Computed pitch-angle distributions and precipitation decay rates are in good agreement with slot-region observations.
Document ID
19720051931
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lyons, L. R.
Thorne, R. M.
Kennel, C. F.
(California, University Los Angeles, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
July 1, 1972
Publication Information
Publication: Journal of Geophysical Research
Volume: 77
Subject Category
Space Radiation
Report/Patent Number
NSSDC-ID-68-014A-06-OS
Accession Number
72A35597
Funding Number(s)
CONTRACT_GRANT: NGR-05-007-190
CONTRACT_GRANT: F19628-71-C-0075
CONTRACT_GRANT: NSF GA-28045
Distribution Limits
Public
Copyright
Other

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